A ball of mass 100 g and another ball 120 g moves towards each other with speed 6 m/s and 5 m/s respectively. if they stick to each other after colliding , what would be the velocity of the combined mass after collision?
let the velocity of combined mass after strike be X
Since, momentum before collision = momentum after collision
= momentum of 1st car + momentum of 2nd car = (120/1000+100/1000)*X
= 100/1000*6 + 120/1000*5 = (12/100 + 10/100)X
= 6/10 + 6/10 = (12+10/100)X
= 6+6/10 = 22/100x
= 22/100 X = 12/10
= X = 12/10*100/22
So X = 60/11